package com.example.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.example.config.R;
import com.example.entity.SetmealDto;
import com.example.entity.Category;
import com.example.entity.Setmeal;
import com.example.service.CategoryService;
import com.example.service.SetmealDishService;
import com.example.service.SetmealService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

@RestController
@RequestMapping("setmeal")
public class SetmealController {

    @Autowired
    private SetmealService setmealService;

    @Autowired
    private SetmealDishService setmealDishService;

    @Autowired
    private CategoryService categoryService;

    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody SetmealDto setmealDto){
        setmealDto.setCreateTime(LocalDateTime.now());
        setmealDto.setUpdateTime(LocalDateTime.now());
        //添加创建人和修改人
        Long empId = (Long) request.getSession().getAttribute("employee");
        setmealDto.setCreateUser(empId);
        setmealDto.setUpdateUser(empId);
        setmealService.saveWithDish(request,setmealDto);
        return R.success("新增菜品成功");
    }


    @GetMapping("/list")
    public R<List<Setmeal>> list(Setmeal setmeal){
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(setmeal.getCategoryId() != null,Setmeal::getCategoryId,setmeal.getCategoryId());
        queryWrapper.eq(setmeal.getStatus() != null,Setmeal::getStatus,setmeal.getStatus());
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        List<Setmeal> list = setmealService.list(queryWrapper);

        return R.success(list);
    }


    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        //分页构造器对象
        Page<Setmeal> pageInfo = new Page<>(page,pageSize);
        Page<SetmealDto> dtoPage = new Page<>();

        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        //添加查询条件，根据name进行like模糊查询
        queryWrapper.like(name != null,Setmeal::getName,name);
        //添加排序条件，根据更新时间降序排列
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        setmealService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dtoPage,"records");
        List<Setmeal> records = pageInfo.getRecords();

        List<SetmealDto> list = records.stream().map((item) -> {
            SetmealDto setmealDto = new SetmealDto();
            //对象拷贝
            BeanUtils.copyProperties(item,setmealDto);
            //分类id
            Long categoryId = item.getCategoryId();
            //根据分类id查询分类对象
            Category category = categoryService.getById(categoryId);
            if(category != null){
                //分类名称
                String categoryName = category.getName();
                setmealDto.setCategoryName(categoryName);
            }
            return setmealDto;
        }).collect(Collectors.toList());

        dtoPage.setRecords(list);
        return R.success(dtoPage);
    }


    @PostMapping("/status/{status}")
    public R<String> updateStatus(
            @PathVariable("status") int status,
            @RequestParam List<Long> ids
    ){
        List<Setmeal> setmeals = new ArrayList<>();
        for (Long id : ids) {
            Setmeal setmeal = new Setmeal();
            setmeal.setStatus(status);
            setmeal.setId(id);
            setmeals.add(setmeal);
        }
        setmealService.updateBatchById(setmeals);
        return R.success("套餐状态修改成功");
    }


    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids){
        setmealService.removeWithDish(ids);
        return R.success("套餐数据删除成功");
    }

}
